#pragma once

#include <iostream>
#include <string>
#include <queue>
#include <pthread.h>

const int defaultcap = 5;

template<class T>
class BlockQueue
{
private:
    bool IsFull() { return _q.size() >= _cap; }
    bool IsEmpty() { return _q.empty(); }

public:
    BlockQueue(int cap = defaultcap)
        :_cap(cap),_csleep_num(0),_psleep_num(0)
    {
        pthread_mutex_init(&_mutex, nullptr);
        pthread_cond_init(&_full_cond, nullptr);
        pthread_cond_init(&_empty_cond, nullptr);
    }

    void Equeue(const T& in)
    {
        pthread_mutex_lock(&_mutex);

        while(IsFull())
        {
            _psleep_num++;
            std::cout << "生产者，进入休眠了:_psleep_num" << _psleep_num << std::endl;
            pthread_cond_wait(&_full_cond, &_mutex);
            _psleep_num--;
        }
        
        
        if(_csleep_num > 0)
        {
            pthread_cond_signal(&_empty_cond);
            std::cout << "唤醒消费者..." << std::endl;
        }
        
        _q.push(in);
        pthread_mutex_unlock(&_mutex);
    }
    
    T Pop()
    {
        pthread_mutex_lock(&_mutex);
        
        while(IsEmpty())
        {
            _csleep_num++;
            std::cout << "消费者，进入休眠了:_psleep_num" << _psleep_num << std::endl;
            pthread_cond_wait(&_empty_cond, &_mutex);
            _csleep_num--;
        }

        if(_psleep_num > 0)
        {
            pthread_cond_signal(&_full_cond);
            std::cout << "唤醒生产者..." << std::endl;
        }

        T data = _q.front();
        _q.pop();


        pthread_mutex_unlock(&_mutex);
        
        return data;
    }

    std::queue<T>& GetQueue()
    {
        return _q;
    }

    ~BlockQueue()
    {
        pthread_mutex_destroy(&_mutex);
        pthread_cond_destroy(&_full_cond);
        pthread_cond_destroy(&_empty_cond);
    }

private:
    std::queue<T> _q;
    int _cap;

    pthread_mutex_t _mutex;
    pthread_cond_t _full_cond;
    pthread_cond_t _empty_cond;

    int _csleep_num;
    int _psleep_num;
};